
Go through the roof
Positive News
Often used when something improves beyond expectations due to positive events or news.

Their stock prices went through the roof after the merger was announced.
Exaggeration
Can be used to exaggerate for dramatic effect, not always literal.

When the celebrity entered, her fans' excitement went through the roof.
Unexpected Spike
Describes a sudden and sharp increase, often surprising or unexpected.

Demand for the new phone model went through the roof overnight.
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